Please consider switching to ZINC15,
which is superior to ZINC12 in most ways. If you prefer ZINC12 after trying ZINC15,
we would like to know why @chem4biology so that we can get you to make the switch.

Welcome to ZINC, a free database of commercially-available compounds
for virtual screening.
ZINC contains over 35 million purchasable compounds in
ready-to-dock, 3D formats. ZINC is provided by the
Irwin
and
Shoichet Laboratories in the
Department of Pharmaceutical Chemistry at the
University of California, San Francisco (UCSF).
To cite ZINC, please reference:
Irwin, Sterling, Mysinger, Bolstad and Coleman,
J. Chem. Inf. Model. 2012
DOI: 10.1021/ci3001277. The original publication is
Irwin and Shoichet,
J. Chem. Inf. Model. 2005;45(1):177-82
PDF,
DOI.
We thank NIGMS for financial support (GM71896).